CA1311066C - Methode d'adressage pour afficheur a cristaux liquides ferroelectriques - Google Patents
Methode d'adressage pour afficheur a cristaux liquides ferroelectriquesInfo
- Publication number
- CA1311066C CA1311066C CA000576468A CA576468A CA1311066C CA 1311066 C CA1311066 C CA 1311066C CA 000576468 A CA000576468 A CA 000576468A CA 576468 A CA576468 A CA 576468A CA 1311066 C CA1311066 C CA 1311066C
- Authority
- CA
- Canada
- Prior art keywords
- pulse
- switching
- waveform
- liquid crystal
- voltage magnitude
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 title claims abstract description 15
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 36
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 description 19
- 210000004027 cell Anatomy 0.000 description 13
- 239000004990 Smectic liquid crystal Substances 0.000 description 11
- 230000005684 electric field Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- -1 fluorinated biphenyl ester Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3622—Control of matrices with row and column drivers using a passive matrix
- G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/06—Details of flat display driving waveforms
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8720856 | 1987-09-04 | ||
| GB878720856A GB8720856D0 (en) | 1987-09-04 | 1987-09-04 | Matrix addressing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1311066C true CA1311066C (fr) | 1992-12-01 |
Family
ID=10623288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000576468A Expired - Lifetime CA1311066C (fr) | 1987-09-04 | 1988-09-02 | Methode d'adressage pour afficheur a cristaux liquides ferroelectriques |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5047757A (fr) |
| EP (1) | EP0306203B1 (fr) |
| JP (1) | JP2726677B2 (fr) |
| KR (1) | KR970009403B1 (fr) |
| CA (1) | CA1311066C (fr) |
| DE (1) | DE3889606T2 (fr) |
| GB (1) | GB8720856D0 (fr) |
| NO (1) | NO173302C (fr) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2225473B (en) * | 1988-11-23 | 1993-01-13 | Stc Plc | Addressing scheme for multiplexded ferroelectric liquid crystal |
| JP2768365B2 (ja) * | 1989-06-24 | 1998-06-25 | 富士通株式会社 | 液晶組成物 |
| JP2584871B2 (ja) * | 1989-08-31 | 1997-02-26 | キヤノン株式会社 | 表示装置 |
| JP2915104B2 (ja) * | 1990-07-30 | 1999-07-05 | キヤノン株式会社 | 液晶素子および液晶駆動方法 |
| US5963186A (en) * | 1990-08-07 | 1999-10-05 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Multiplex addressing of ferro-electric liquid crystal displays |
| GB2249653B (en) * | 1990-10-01 | 1994-09-07 | Marconi Gec Ltd | Ferroelectric liquid crystal devices |
| JP2996564B2 (ja) * | 1991-11-08 | 2000-01-11 | シャープ株式会社 | 液晶パネルの駆動方法 |
| US5404237A (en) * | 1992-04-28 | 1995-04-04 | Katsuse; Hirofumi | Ferroelectric liquid crystal display having c2u alignment and the rewriting voltage<non-rewriting voltage |
| KR950000754B1 (ko) * | 1992-04-30 | 1995-01-28 | 삼성전관 주식회사 | 강유전성 액정의 구동방법 및 바이어스 전압회로 |
| GB2271011A (en) * | 1992-09-23 | 1994-03-30 | Central Research Lab Ltd | Greyscale addressing of ferroelectric liquid crystal displays. |
| GB9309502D0 (en) * | 1993-05-08 | 1993-06-23 | Secr Defence | Addressing ferroelectric liquid crystal displays |
| GB2293907A (en) * | 1994-10-03 | 1996-04-10 | Sharp Kk | Drive scheme for liquid crystal display |
| TW396200B (en) | 1994-10-19 | 2000-07-01 | Sumitomo Chemical Co | Liquid crystal composition and liquid crystal element containing such composition |
| GB9510612D0 (en) * | 1995-05-25 | 1995-07-19 | Central Research Lab Ltd | Improvements in or relating to the addressing of liquid crystal displays |
| GB9526270D0 (en) * | 1995-12-21 | 1996-02-21 | Secr Defence | Multiplex addressing of ferroelectric liquid crystal displays |
| GB2333634B (en) | 1998-01-21 | 2002-02-20 | Sharp Kk | Liquid crystal device and method of addressing liquid crystal device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3322285A1 (de) * | 1983-06-18 | 1984-12-20 | Schering AG, 1000 Berlin und 4709 Bergkamen | 1-alkyl-androsta-1,4-dien-3,17-dione, verfahren zu deren herstellung und diese enthaltende pharmazeutische praeparate |
| GB2173337B (en) * | 1985-04-03 | 1989-01-11 | Stc Plc | Addressing liquid crystal cells |
| GB2173335B (en) * | 1985-04-03 | 1988-02-17 | Stc Plc | Addressing liquid crystal cells |
| GB2173336B (en) * | 1985-04-03 | 1988-04-27 | Stc Plc | Addressing liquid crystal cells |
| US4850676A (en) * | 1985-07-31 | 1989-07-25 | Seiko Epson Corporation | Method for driving a liquid crystal element |
| GB2173629B (en) * | 1986-04-01 | 1989-11-15 | Stc Plc | Addressing liquid crystal cells |
| JPH0833535B2 (ja) * | 1987-02-05 | 1996-03-29 | セイコー電子工業株式会社 | 強誘電性液晶電気光学装置 |
| JP2595550B2 (ja) * | 1987-08-13 | 1997-04-02 | 日本電装株式会社 | マトリックス型液晶表示装置 |
-
1987
- 1987-09-04 GB GB878720856A patent/GB8720856D0/en active Pending
-
1988
- 1988-08-23 EP EP88307804A patent/EP0306203B1/fr not_active Expired - Lifetime
- 1988-08-23 DE DE3889606T patent/DE3889606T2/de not_active Expired - Fee Related
- 1988-08-30 NO NO883871A patent/NO173302C/no unknown
- 1988-09-02 US US07/239,994 patent/US5047757A/en not_active Expired - Lifetime
- 1988-09-02 CA CA000576468A patent/CA1311066C/fr not_active Expired - Lifetime
- 1988-09-05 JP JP63220582A patent/JP2726677B2/ja not_active Expired - Fee Related
- 1988-09-05 KR KR1019880011489A patent/KR970009403B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3889606D1 (de) | 1994-06-23 |
| EP0306203A2 (fr) | 1989-03-08 |
| KR970009403B1 (ko) | 1997-06-13 |
| DE3889606T2 (de) | 1994-12-01 |
| GB8720856D0 (en) | 1987-10-14 |
| US5047757A (en) | 1991-09-10 |
| EP0306203A3 (fr) | 1991-02-06 |
| KR890005565A (ko) | 1989-05-15 |
| NO173302C (no) | 1993-11-24 |
| NO883871L (no) | 1989-03-06 |
| EP0306203B1 (fr) | 1994-05-18 |
| NO173302B (no) | 1993-08-16 |
| JP2726677B2 (ja) | 1998-03-11 |
| JPH0320715A (ja) | 1991-01-29 |
| NO883871D0 (no) | 1988-08-30 |
Similar Documents
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|---|---|---|
| CA1311066C (fr) | Methode d'adressage pour afficheur a cristaux liquides ferroelectriques | |
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| US4909607A (en) | Addressing liquid crystal cells | |
| US4904064A (en) | Electronic addressing of ferroelectric and flexoelectric liquid crystal devices | |
| US5136408A (en) | Liquid crystal apparatus and driving method therefor | |
| CA2002657C (fr) | Methode d'adressage pour cristaux liquides ferro-electyriques multiplexes | |
| GB2290160A (en) | Multiplex addressing of ferro-electric liquid crystal displays | |
| EP0196905A2 (fr) | Adressage de cellules à cristaux liquides | |
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| US4762400A (en) | Ferroelectric liquid crystal electro-optical device having half-select voltage to maximize contrast | |
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| CA1304485C (fr) | Element d'affichage a cristaux liquides et methode d'attaque de cet element | |
| Gooch et al. | Matrix-addressed liquid crystal displays | |
| JPH06194623A (ja) | 反強誘電性液晶表示素子の駆動方法 | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |